<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">

<head>
	<script type = "text/javascript">
		function askForName()	{
			name = prompt("What is your name?","");			
		}
		
		function sayGoodBye(name)	{
			alert("Good bye, " + name);
		}
	</script>
</head>

<body onload = "askForName()" onunload = "sayGoodBye(name)">	
</body>

</html>